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<p class="MsoNormal">Dear Bo and Andreas<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-US">Thank you very much for your insights.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Given the fact that QGIS has been more stable since yesterday, I think the problem was related to my hard drive memory and temporary files. I did not have a lot of space left on the hard drive, and I tend do leave my
computer on when calling it a day, so maybe that combination was not very helpful for QGIS to work smoothly.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’ve deleted some data on my laptop, thus freeing up some space and, as you said, I deleted my temp files for QGIS (I had been working with very large datasets), and for now everything works quite well. I’ll also start
shutting off my laptop from time to time </span><span lang="EN-US" style="font-family:"Segoe UI Emoji",sans-serif">😉</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">I’ll keep you posted if it should occur again and if I can find a clear solution to the problem. Anyway, Bo, you and your wife’s list is a very good starting point to start problem solving with should this issue occur
again. There are some things that I can exclude as reason (build is the stable 3.10 version, it’s not the anti-virus, it’s not a work network environment, …), and some things that I still have to test. Many thanks for your help (and good luck with the teaching
assignment, I’m teaching introductory courses in GIS at Vrije Universiteit Brussel, but one of the next things I would like to dive into is the use of PostGIS and PostgreSQL for my own research)!<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Kind regards<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US">Koos<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:#8EAADB;background:white;mso-fareast-language:NL">-- </span><span lang="EN-GB" style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:#8EAADB;mso-fareast-language:NL"><br>
<b><span style="background:white">dr. Koos Fransen<o:p></o:p></span></b></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:#8EAADB;mso-fareast-language:NL">Research unit Cosmopolis (VUB)<o:p></o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:#8EAADB;mso-fareast-language:NL">Research unit ISE (UGent)</span><b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:#8EAADB;background:white;mso-fareast-language:NL"><o:p></o:p></span></b></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:NL"><o:p> </o:p></span></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:8.0pt;font-family:"Century Gothic",sans-serif;color:#2F5496;mso-fareast-language:NL">I am available for
<u>VUB</u> on <u>Tuesdays, Thursdays and Fridays</u> and for UGent on Mondays and Wednesdays. Consequently, I try to structure meetings accordingly and answers to your mails may be delayed.<o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span lang="EN-US"><o:p> </o:p></span></p>
<div>
<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:NL">From:</span></b><span lang="EN-US" style="mso-fareast-language:NL"> Andreas Neumann <a.neumann@carto.net>
<br>
<b>Sent:</b> donderdag 9 april 2020 17:27<br>
<b>To:</b> Bo Victor Thomsen <bo.victor.thomsen@gmail.com>; Koos Fransen <Koos.Fransen@vub.be>; qgis-user@lists.osgeo.org<br>
<b>Subject:</b> Re: [Qgis-user] ISSUE QGIS keeps freezing - QGIS Desktop 3.10.4<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<p>Hi,<o:p></o:p></p>
<p>These are all good points. I also had severe issues with Antivirus - it slowed down or prevented a lot of the network access. The IT services had to add exceptions.<o:p></o:p></p>
<p>But you describe that it only happens after a couple of days of usage, which is strange.<o:p></o:p></p>
<p>If you find out what the issues really is, please let us know, so we can learn.<o:p></o:p></p>
<p>Andreas<o:p></o:p></p>
<div>
<p class="MsoNormal">Am 09.04.20 um 15:20 schrieb Bo Victor Thomsen:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p>Hi Koos -<o:p></o:p></p>
<p>I had a talk with my wife Lene Fischer about your issues. (She is a Assoc. Prof. teaching GIS at a department of the University of Copenhagen using QGIS. I co-lecture with her on the use of spatial enabled databases (PostgreSQL/ PostGIS)).
<o:p></o:p></p>
<p>She hasn't experienced the issues you describe (but some other issues) <o:p></o:p></p>
<p>Here is some pointers:<o:p></o:p></p>
<ul type="disc">
<li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Use a long-term releases and keep up with the point releases 3.10.3 -> 3.10.4 (Which you do :-)<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Clean the temp dir regularly (Which you did :-)<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Check the setup of your windows pointers to user-dirs, temp space. Sometimes they are not suited for computers outside the university network (or inside, if the network sucks)
<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Check if your logon name contains special characters outside us-ASCII like accented character or blanks. QGIS is fine with these but some add-on libraries is not. The logon name can be a part of a path name that something chokes on.<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Check your antivirus by temporarily disable it before using QGIS.<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Check your disk space. The temp dir can "grow" considerably during QGIS use. <o:p>
</o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Check the amount of memory used on your computer. If you <b>are</b> using all available ram you
<b>will</b> get the symptoms you describe<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Install a minimum of plugins.<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
Keep your windows installation as clean as possible. QGIS might conflict with some other software installed on your computer. You might try to install QGIS on computer with a new clean install of windows. Check if the error is repeated on the new computer.
<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l2 level1 lfo1">
You might try with installing QGIS from the "network installer" utility instead of a stand-alone installation (<a href="https://download.osgeo.org/osgeo4w/osgeo4w-setup-x86_64.exe">https://download.osgeo.org/osgeo4w/osgeo4w-setup-x86_64.exe</a>). It defaults
to another installation directory than the stand-alone installation. That might help.<o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt;mso-list:l2 level1 lfo1">
If nothing of the above works - try another version of QGIS i.e. 3.12.1. <br>
The network installer has the possibility to install a "bleeding edge" version of QGIS but I won't recommend using these in a teaching situation (or any other situation which involves inexperienced users). But you can use it in a testing situation
<o:p></o:p></li></ul>
<pre>-- <o:p></o:p></pre>
<pre>Med venlig hilsen / Kind regards<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<pre>Bo Victor Thomsen<o:p></o:p></pre>
<pre><o:p> </o:p></pre>
<p> <o:p></o:p></p>
<div>
<p class="MsoNormal">Den 09-04-2020 kl. 11:20 skrev Koos Fransen:<o:p></o:p></p>
</div>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal">Hi Bo<o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Thanks for your quick response!</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Sorry for the minimal information provided, I wasn’t sure what to add (first question to the QGIS user list).</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">To answer your questions:</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">OS: Windows 10 – 64 bit</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">QGIS version: 3.10.4 64 bit, stand-alone installation</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I’m not in any networked set-up, I’m working from home on my own computer. I have only one plugin installed (QuickOSM), and I’ve already tried uninstalling, but without any difference.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Since my question I’ve been trying some things, and I have deleted the temporary QGIS files in my Local/Temp folder. When I open and use QGIS now, I have the feeling it’s more stable again. It gives a hint of freezing
up at the start, but afterwards all goes quite well again. Then again, not sure of this is a solid solution for fixing this issue, as I have experienced this issue before completely deleting and reinstalling everything QGIS-related on my laptop (using REVO
uninstaller). After this, QGIS worked fine for about a week until today.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I do recall trying to load some large files into QGIS, maybe they were stored in a temporary directory somewhere and deleting the temporary files helped?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Anyways, it might be relevant for me to know. I’ve switched our courses from ArcGIS to QGIS, and I’m really happy about it, but I would like to be able to help my students if these kind of problems occur.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Thank for the help already, not sure if there’s more to do for now, but let me know if you have any more ideas.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Kind regards</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Koos</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<div>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:8.0pt;color:black">-- <br>
<b><span style="background:white">dr. Koos Fransen</span></b></span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:8.0pt;color:black">Research unit Cosmopolis (VUB)</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:8.0pt;color:black">Research unit ISE (UGent)</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US" style="mso-fareast-language:NL"> </span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span lang="EN-GB" style="font-size:8.0pt;color:black">I am available for
<u>VUB</u> on <u>Tuesdays, Thursdays and Fridays</u> and for UGent on Mondays and Wednesdays. Consequently, I try to structure meetings accordingly and answers to your mails may be delayed.</span><o:p></o:p></p>
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<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
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<p class="MsoNormal"><b><span lang="EN-US" style="mso-fareast-language:NL">From:</span></b><span lang="EN-US" style="mso-fareast-language:NL"> Qgis-user
<a href="mailto:qgis-user-bounces@lists.osgeo.org"><qgis-user-bounces@lists.osgeo.org></a>
<b>On Behalf Of </b>Bo Victor Thomsen<br>
<b>Sent:</b> donderdag 9 april 2020 10:16<br>
<b>To:</b> <a href="mailto:qgis-user@lists.osgeo.org">qgis-user@lists.osgeo.org</a><br>
<b>Subject:</b> Re: [Qgis-user] ISSUE QGIS keeps freezing - QGIS Desktop 3.10.4</span><o:p></o:p></p>
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<p class="MsoNormal"> <o:p></o:p></p>
<p>Hi Koos: <o:p></o:p></p>
<p>That's not much information to go on. <o:p></o:p></p>
<p>What about: OS type and version ? 32/64 bit os ? QGIS version ? QGIS 32/64 bit ? network environment ? Normal stand-alone installation or Network installation ?<o:p></o:p></p>
<p>I'll hazard a <b>guess</b> based on my own painful experiences: You are working in a networked windows setup, where your IT department has made some modifications for home directory (including temp file placement) and/or the userdata environment - maybe
making it fully dependant on the network. And maybe You are using the same login account for all pupils. Combine this with a marginally functioning network and it will be a train wreck<o:p></o:p></p>
<p>Another scenario: You have installed some plugin, that's not working correctly.<o:p></o:p></p>
<p>What you can test: <o:p></o:p></p>
<ul type="disc">
<li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo4">
Disable/Remove all plugins from QGIS and test if the problem goes away <o:p></o:p></li><li class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto;mso-list:l1 level1 lfo4">
Load some GIS data locally on you computer and disconnect the computer from the network. Then test QGIS again.<o:p></o:p></li></ul>
<p>That said, QGIS ver. 3.10 onwards has long startup times. However it's quick and stable after that<o:p></o:p></p>
<p class="MsoNormal">-- <o:p></o:p></p>
<pre>Med venlig hilsen / Kind regards<o:p></o:p></pre>
<pre> <o:p></o:p></pre>
<pre>Bo Victor Thomsen<o:p></o:p></pre>
<p>Den 09-04-2020 kl. 09:46 skrev Koos Fransen:<o:p></o:p></p>
<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p class="MsoNormal"><span lang="EN-US">Dear all</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I have a question regarding QGIS.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I’m using QGIS for my classes, but since a recent install my QGIS keeps freezing right after startup. It doesn’t respond until after a minute, then I can open some files and then it freezes again. This keeps on going,
making it impossible to keep working with QGIS.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">I’ve tried reinstalling, which always helps at first, but after a couple of days it starts freezing again. I’ve also tried with different versions, with the same result.</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">It might maybe have something to do with temporary files?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Has someone experienced the same issue, and are there possible solutions that you know of?</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Thanks!</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US">Koos</span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span lang="EN-US"> </span><o:p></o:p></p>
<p class="MsoNormal"><span style="mso-fareast-language:NL"><br>
<br>
<br>
</span><o:p></o:p></p>
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